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Finding the Fourth Proportional to 305,553.59, 421,657.61 and 169,579.56

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Solution

The fourth proportional to 305,553.59, 421,657.61 and 169,579.56 is: 234,016.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,553.59 : 421,657.61 = 169,579.56 : x
  2. Step 2: Convert to fraction form
    305,553.59/421,657.61 = 169,579.56/x
  3. Step 3: Cross multiply
    305,553.59x = 421,657.61 × 169,579.56
  4. Step 4: Simplify right side
    305,553.59x = 71,504,511,126.55
  5. Step 5: Solve for x
    x = 71,504,511,126.55/305,553.59
  6. Step 6: Final answer
    x = 234,016.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.